mirror of
https://github.com/Interlisp/maiko.git
synced 2026-01-14 23:46:14 +00:00
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/* $Id: xbbt.c,v 1.2 1999/01/03 02:07:46 sybalsky Exp $ (C) Copyright Venue, All Rights Reserved */
|
|
static char *id = "$Id: xbbt.c,v 1.2 1999/01/03 02:07:46 sybalsky Exp $ Copyright (C) Venue";
|
|
|
|
/************************************************************************/
|
|
/* */
|
|
/* (C) Copyright 1989, 1990, 1990, 1991, 1992, 1993, 1994, 1995 Venue. */
|
|
/* All Rights Reserved. */
|
|
/* Manufactured in the United States of America. */
|
|
/* */
|
|
/* The contents of this file are proprietary information */
|
|
/* belonging to Venue, and are provided to you under license. */
|
|
/* They may not be further distributed or disclosed to third */
|
|
/* parties without the specific permission of Venue. */
|
|
/* */
|
|
/************************************************************************/
|
|
|
|
#include "version.h"
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <X11/Xlib.h>
|
|
#include <X11/Xutil.h>
|
|
|
|
#include "lispemul.h"
|
|
#include "xdefs.h"
|
|
#include "devif.h"
|
|
|
|
extern DspInterface currentdsp;
|
|
|
|
/************************************************************************/
|
|
/* */
|
|
/* c l i p p i n g _ X b i t b l t */
|
|
/* */
|
|
/* BITBLT from the display region to the X server's display, */
|
|
/* clipping to fit the window we're in on the server. */
|
|
/* */
|
|
/* dummy is the placeholder for the bitmap to be blitted */
|
|
/* */
|
|
/************************************************************************/
|
|
unsigned long clipping_Xbitblt(DspInterface dsp, int dummy, int x, int y, int w, int h)
|
|
{
|
|
int temp_x, temp_y, LowerRightX, LowerRightY;
|
|
|
|
LowerRightX = dsp->Vissible.x + dsp->Vissible.width;
|
|
LowerRightY = dsp->Vissible.y + dsp->Vissible.height;
|
|
|
|
temp_x = x + w - 1;
|
|
temp_y = y + h - 1;
|
|
|
|
if ((temp_x < dsp->Vissible.x) || (x > LowerRightX) || (temp_y < dsp->Vissible.y) ||
|
|
(y > LowerRightY))
|
|
return (0);
|
|
|
|
if ((x >= dsp->Vissible.x) && (temp_x <= LowerRightX) && (y >= dsp->Vissible.y) &&
|
|
(temp_y <= LowerRightY)) {
|
|
XLOCK;
|
|
XPutImage(dsp->display_id, dsp->DisplayWindow, dsp->Copy_GC, &dsp->ScreenBitmap, x, y,
|
|
x - dsp->Vissible.x, y - dsp->Vissible.y, w, h);
|
|
XFlush(dsp->display_id);
|
|
XUNLOCK;
|
|
return (0);
|
|
}
|
|
|
|
if (x < dsp->Vissible.x) {
|
|
w -= dsp->Vissible.x - x;
|
|
x = dsp->Vissible.x;
|
|
}
|
|
|
|
if (temp_x > LowerRightX) w -= temp_x - LowerRightX;
|
|
|
|
if (y < dsp->Vissible.y) {
|
|
h -= dsp->Vissible.y - y;
|
|
y = dsp->Vissible.y;
|
|
}
|
|
|
|
if (temp_y > LowerRightY) h -= temp_y - LowerRightY;
|
|
|
|
if ((w > 0) && (h > 0)) {
|
|
XLOCK;
|
|
XPutImage(dsp->display_id, dsp->DisplayWindow, dsp->Copy_GC, &dsp->ScreenBitmap, x, y,
|
|
x - dsp->Vissible.x, y - dsp->Vissible.y, w, h);
|
|
XFlush(dsp->display_id);
|
|
XUNLOCK;
|
|
}
|
|
return (0);
|
|
|
|
} /* end clipping_Xbitblt */
|